As someone who's does work that get app reviews, luckily I haven't had to deal with joke reviews, but it really sucks when there's some very temporary problem for a day or two, and suddenly you start getting a bunch of 'it used to be good but xyz is broken' reviews that never go away because when its fixed, they never come back to update it.
Please be a responsible reviewer and if its something temporary, update your review! Ive even replied and let them know its fixed and it stays forever.